The President of Fiji's Chamber of Commerce, Taito Waradi, says Vanuatu's ban on biscuit imports from Fiji gives preferential treatment to Samoa.
The trade is worth 1.2 million US dollars a year.
Vanuatu imposed the ban in apparent violation of a free trade agreement between countries of the Melanesia Spearhead Group.
Mr Waradi says he understands a business relationship may have soured between Fiji and Samoa, who both produce the same kind of biscuits.
"Well what I'm told is that the Vanuatu government have given a Samoa biscuit supplier that right, to replace the Fiji supplier."
Taito Waradi.
The Fiji government has given Vanuatu two weeks to lift the ban, or face retaliatory action.
